Valjoux 7733 - Driving wheel broken

Thread: Valjoux 7733 - Driving wheel broken

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  1. #1
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    Valjoux 7733 - Driving wheel broken

    Hi
    I have a 60s/70s chronograph with a broken driving wheel which left the lower part stuck in a part below. Please find image attachment.
    I know from research that the drivig wheel is part no. 8060. The qestion is, what wheel part is does fit into (which is beneath the driving wheel)?
    Possibly, this part has to be relaced as well.
    I´ll appreciate your help.
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  2. #2
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    Re: Valjoux 7733 - Driving wheel broken

    I can't imagine what has happened here!

    It looks like the jewel has gone. Which means you're almost certainly going to need a 4th wheel as well, as I can't imagine the delicate pinion survived whatever explosion it was that went off in your watch. These parts don't this spontaneously.

    This is a watchmaker level repair.

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